diff --git a/README.md b/README.md
index dc030a5..599e8f1 100644
--- a/README.md
+++ b/README.md
@@ -121,18 +121,19 @@ const documents = await firestore.getDocumentsInCollection("my-collection", {
 const document = await firestore.getDocument("my-collection", {
   where: {
     filters: [
-      ["name", FirestoreOperator.IN, ["John Doe", "Max Mustermann"]],
+      ["name", FirestoreOperator.IN, ["John Doe", "Max Mustermann"]], // example of an IN filter
     ],
   },
 });
 
-// e.g.
+// e.g. a more complex query
 const documents = await firestore.getDocumentsInCollection("my-collection", {
   where: {
     filters: [
       ["name", FirestoreOperator.EQUAL, "Ivan Petrov"],
-      ["age", FirestoreOperator.GREATER_THAN, 20],
+      ["height", FirestoreOperator.LESS_THAN, 200],
       ["address.city", FirestoreOperator.EQUAL, "Moscow"], // example of a nested field
+      ["bornAt", FirestoreOperator.GREATER_THAN, new Date("1990-01-01T12:50:00.000Z")], // example of a timestamp filter
     ],
   },
   orderBy: [{ field: "createdAt", direction: "DESCENDING" }], // you can sort the results
@@ -182,3 +183,13 @@ await firestore.createDocument("my-collection", {
 ```
 
 The above will be converted to a Firestore timestamp automatically.
+
+When filtering results by timestamp, make sure to use `Date` objects as well, e.g.:
+
+```typescript
+const documents = await firestore.getDocumentsInCollection("my-collection", {
+  where: {
+    filters: [["createdAt", FirestoreOperator.GREATER_THAN, new Date("2024-12-02")]],
+  },
+});
+```
diff --git a/deno.json b/deno.json
index b176e12..f6946e5 100644
--- a/deno.json
+++ b/deno.json
@@ -1,6 +1,6 @@
 {
   "name": "@koiztech/firestore-admin",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "exports": "./mod.ts",
   "tasks": {
     "dev": "deno run --watch --env mod.ts",
diff --git a/mod.ts b/mod.ts
index 90a9b56..e14c7c0 100644
--- a/mod.ts
+++ b/mod.ts
@@ -440,6 +440,8 @@ export class FirestoreAdminClient {
       return { nullValue: "NULL_VALUE" };
     } else if (Array.isArray(value)) {
       return { arrayValue: { values: value.map((v) => this.encodeValue(v)) } };
+    } else if (value instanceof Date) {
+      return { timestampValue: value.toJSON() };
     } else {
       throw new Error(`Unsupported value type: ${typeof value}`);
     }